Yes that is a work around but requires a lot of work: Current best work flow to upload a Ring design is as following:
1*) Upload all 32 sizes to shapeways VIA FTP and come back in an hour
2*) Log in to shapeways
3*) Goto
https://www.shapeways.com/mydesigns?ug[page]=5#ug yes faster to type URL in
4 to 168) Open each model, click more, click for sale, click update, cut and paste address
169) Click on username -> Myshop
170*) Click on markup CSV
171*) Click on Download CSV
172*) Open CSV in excel
173*) Cut and paste cells into auto calculation work book
174*) Save back to CSV
175) Click Edit the CSV
176) Click Upload and Preview
177*) Select CSV File
178*) Upload File
179*) Verify CSV File Interpreted correctly
180*) Save CSV
181) Select shop inventory
182) Select product inventory manager(wait 10min to load)
183 to 439) Deselect all materials it is not available in
440) Save changes
441*) Click on username -> My Models
442*) Click to edit description
443*) Add description of ring with link to all hiden size fields
444*) Save
That is 444 steps(do you have shares in a mouse manufacturer?) When only the 16 marked with * should be needed. And I removed about 192 steps by writing an app to let me upload via FTP instead of using the on site upload system.